Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 11, NWS Des Moines, IA

April 7, 1995Taylor County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Apr 7, 1995, 5:05 PM CDT for Taylor County, Iowa. It was in force for 15 min.

The area

The counties it named.

The facts

Issued
Apr 7, 1995, 5:05 PM CDT (22:05 UTC)
Expired
Apr 7, 1995, 5:20 PM CDT
In force
15 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Taylor County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.1 hours before the alert went out and 155 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 1995-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 1995-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 204 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
671 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
204 m²/s²
0-3 km storm-relative helicity
239 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS1 KDSM 072207 RRA
SVRDSM
IAC173-072220-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
505 PM CDT FRI APR 7 1995

* SEVERE THUNDERSTORM WARNING FOR
  NORTHEASTERN TAYLOR COUNTY - SOUTHWEST IOWA

* UNTIL 520 PM CDT
 
* SOME TOWNS AFFECTED
    LENOX

* AT 505 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM NEARING LENOX 65
  MILES SOUTHWEST OF DES MOINES MOVING EAST AT 25 MPH.

* THE STORM WILL BE NEAR LENOX AT 510 PM.
 
EXPECT HAIL UP TO ONE INCH IN DIAMETER FROM THIS STORM. STAY INDOORS.

PYTLAK

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Apr 7, 12:01 PM CDT, 5 hours 4 minutes before
IAZALL-080000-

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
1201 PM CDT FRI APR 7 1995

HAZARD...SCATTERED SEVERE THUNDERSTORMS PRODUCING LARGE HAIL. GUSTY
WINDS AND RAINFALL UP TO AN INCH IN AN HOUR IS ALSO POSSIBLE.

AREA OF CONCERN...THE SOUTHERN TWO-THIRDS OF IOWA...MAINLY SOUTH OF A
LINE FROM DUBUQUE...TO FORT DODGE TO ONAWA. SOME COMMUNITIES IN THIS
AREA INCLUDE...DES MOINES...AMES...BOONE...WATERLOO...CRESTON...
LAMONI... OTTUMWA...BURLINGTON AND IOWA CITY.

TIMING DETAILS...SCATTERED THUNDERSTORMS...SOME APPROACHING SEVERE
LEVELS...HAVE DEVELOPED OVER EAST CENTRAL NEBRASKA LATE THIS MORNING.
THESE STORMS WILL DEVELOP EAST INTO SOUTHWEST IOWA BY 200 PM...SOUTH
CENTRAL IOWA BY 400 PM...AND SOUTHEAST IOWA BY 600 PM. ALSO... A
ISOLATED THUNDERSTORM PRODUCING SMALL HAIL HAS DEVELOPED OVER CENTRAL
IOWA NORTH OF DES MOINES. OTHER STORMS COULD DEVELOP BETWEEN ROUTES 20
AND 30 AND APPROACH SEVERE LEVELS.

METEOROLOGICAL COMMENTS...THE ATMOSPHERE CONTINUES TO DESTABILIZE...
ESPECIALLY OVER THE SOUTHERN QUARTER OF IOWA. THE SUN HAS BROKEN OUT
OVER THE SOUTHERN TWO-TIERS OF COUNTIES AND SATELLITE INDICATED THE
CLEARING MAY WORK FURTHER NORTH DURING THE NEXT COUPLE OF HOURS.  VERY
COLD TEMPERATURES ALOFT AND DOPPLER RADAR TRENDS INDICATED THE MAIN
THREAT REMAINS LARGE HAIL.

PRECAUTIONS...EMERGENCY MANAGERS SHOULD REMAIN ALERT FOR THE
POSSIBILITY OF A WATCH ISSUANCE LATER THIS AFTERNOON.  SPOTTER
ACTIVATION MAY BE REQUIRED LATER AFTERNOON.

THE NEXT POTENTIAL STATEMENT WILL BE ISSUED AROUND 100 PM UNLESS A
WATCH IS ISSUED BY THEN.

KUBINA/PYTLAK
Special weather statement, Apr 7, 12:02 PM CDT, 5 hours 3 minutes before
IAZALL-080000-

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
1201 PM CDT FRI APR 7 1995

HAZARD...SCATTERED SEVERE THUNDERSTORMS PRODUCING LARGE HAIL. GUSTY
WINDS AND RAINFALL UP TO AN INCH IN AN HOUR IS ALSO POSSIBLE.

AREA OF CONCERN...THE SOUTHERN TWO-THIRDS OF IOWA...MAINLY SOUTH OF A
LINE FROM DUBUQUE...TO FORT DODGE TO ONAWA. SOME COMMUNITIES IN THIS
AREA INCLUDE...DES MOINES...AMES...BOONE...WATERLOO...CRESTON...
LAMONI... OTTUMWA...BURLINGTON AND IOWA CITY.

TIMING DETAILS...SCATTERED THUNDERSTORMS...SOME APPROACHING SEVERE
LEVELS...HAVE DEVELOPED OVER EAST CENTRAL NEBRASKA LATE THIS MORNING.
THESE STORMS WILL DEVELOP EAST INTO SOUTHWEST IOWA BY 200 PM...SOUTH
CENTRAL IOWA BY 400 PM...AND SOUTHEAST IOWA BY 600 PM. ALSO... A
ISOLATED THUNDERSTORM PRODUCING SMALL HAIL HAS DEVELOPED OVER CENTRAL
IOWA NORTH OF DES MOINES. OTHER STORMS COULD DEVELOP BETWEEN ROUTES 20
AND 30 AND APPROACH SEVERE LEVELS.

METEOROLOGICAL COMMENTS...THE ATMOSPHERE CONTINUES TO DESTABILIZE...
ESPECIALLY OVER THE SOUTHERN QUARTER OF IOWA. THE SUN HAS BROKEN OUT
OVER THE SOUTHERN TWO-TIERS OF COUNTIES AND SATELLITE INDICATED THE
CLEARING MAY WORK FURTHER NORTH DURING THE NEXT COUPLE OF HOURS.  VERY
COLD TEMPERATURES ALOFT AND DOPPLER RADAR TRENDS INDICATED THE MAIN
THREAT REMAINS LARGE HAIL.

PRECAUTIONS...EMERGENCY MANAGERS SHOULD REMAIN ALERT FOR THE
POSSIBILITY OF A WATCH ISSUANCE LATER THIS AFTERNOON.  SPOTTER
ACjTIVATION MAY BE REQUIRED LATER AFTERNOON.

THE NEXT POTENTIAL STATEMENT WILL BE ISSUED AROUND 100 PM UNLESS A
WATCH IS ISSUED BY THEN.

KUBINA/PYTLAK
Special weather statement, Apr 7, 4:52 PM CDT, 13 minutes before
IAZ070-072225-

SEVERE WEATHER OUTLOOK FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
452 PM CDT FRI APR 7 1995

THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CASS COUNTY HAS BEEN
CANCELLED.

THE SEVERE STORMS WHICH MOVED INTO THE COUNTY BETWEEN 425 AND 440 PM
HAVE WEAKENED AND NO LONGER POSE A THREAT OF SEVERE WEATHER. BRIEF
HEAVY RAIN AND PEA SIZED HAIL WILL REMAIN POSSIBLE UNTIL THE STORM
DEPARTS BY 515 PM CDT.

PYTLAK
Special weather statement, Apr 7, 4:53 PM CDT, 12 minutes before
IAZ070-072225-

SEVERE WEATHER OUTLOOK FOR IOWA
NATIONAL WEATHER SERVICE DES MOINES IA
452 PM CDT FRI APR 7 1995

THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN CASS COUNTY HAS BEEN
CANCELLED.

THE SEVERE STORMS WHICH MOVED INTO THE COUNTY BETWEEN 425 AND 440 PM
HAVE WEAKENED AND NO LONGER POSE A THREAT OF SEVERE WEATHER. BRIEF
HEAVY RAIN AND PEA SIZED HAIL WILL REMAIN POSSIBLE UNTIL THE STORM
DEPARTS BY 515 PM CDT.

PYTLAK
Special weather statement, Apr 7, 5:00 PM CDT, 5 minutes before
IAZALL-080000-

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IA
5 PM CDT FRI APR 7 1995

HAZARD...ISOLATED SEVERE THUNDERSTORMS PRODUCING HAIL. MOST HAIL
AROUND PEA SIZE WITH OCCASIONAL HAIL TO AROUND 1 1/2 INCHES.

AREA OF CONCERN...MAINLY SOUTH OF INTERSTATE 80 AND WEST OF
STATE ROUTE 14 THROUGH 7 PM.

TIMING DETAILS...BETWEEN 5 AND 7 PM THUNDERSTORMS WILL BE MOST
NUMEROUS AROUND THE COMMUNITIES OF CRESTON...WINTERSET...INDIANOLA
AND LAMONI.  BETWEEN 7 AND 9 PM THUNDERSTORMS COULD PUSH MORE INTO
SOUTH CENTRAL AND SOUTHEAST IOWA NEAR OTTUMWA...FAIRFIELD...AND
NEAR DES MOINES.

METEOROLOGICAL COMMENTS...SEVERE THUNDERSTORMS ARE FORMING ALONG
A WARM FRONT THAT EXTENDS ACROSS SOUTHERN IOWA. THUNDERSTORMS WILL
REMAIN CONFINED CLOSE TO THIS FRONT THROUGH THE EVENING HOURS.
DEW POINTS ARE NEARING THE LOW 50S OVER THE FAR SOUTHERN PART OF
IOWA. THE MAIN THREAT FOR THESE STORMS IS LARGE HAIL AND LIGHTNING.

PRECAUTIONS...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT OVER
THE AREA OF CONCERN UNTIL 7 PM.  EMERGENCY MANAGERS SHOULD BE
PREPARED FOR SPOTTER ACTIVATION.

BELLES/FELDT

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 7, 4:28 PM CDTSevere Thunderstorm WarningDMXCass14 min
Apr 7, 5:20 PM CDTSevere Thunderstorm WarningDMXCrawford25 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1995Every severe thunderstorm warning in 1995

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.